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Recognised as Colour

#101C81

  • #101C81
  • Blue
  • Dark
  • Nearest: Midnight blue

#101C81 is a blue with RGB values 16, 28, 129 and HSL 234°, 78%, 28%. It is a dark colour, so white text on it reaches 14:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#101C81#101C81
HEX#101C81
RGBrgb(16, 28, 129)
RGB (0–1)0.0627, 0.1098, 0.5059
RGB percentages6.3%, 11%, 50.6%
HSLhsl(233.6, 77.9%, 28.4%)
HSV / HSBhsv(233.6, 87.6%, 50.6%)
CMYK87.6%, 78.3%, 0%, 49.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,055,873
CSS custom property--colour: #101C81;

Brightness & contrast

Relative luminance0.02526WCAG 2.x, 0 is black and 1 is white
Perceived brightness49.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.95:1
Contrast with white13.95:1WCAG normal text: AAA
Contrast with black1.51:1WCAG normal text: Fail
Greyscale equivalent#212121
Inverted#EFE37E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003284no red cones; affects about 1% of men; ΔE 17.1 from the original
Deuteranopia#00267Fno green cones; the most common form, about 1% of men; ΔE 9.2 from the original
Tritanopia#003A4Dno blue cones; rare, and affects men and women equally; ΔE 60.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text13.95:1WCAG large text: AAA
Contrast with black, large text1.51:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 8.5Navy · ΔE 15.3Indigo · ΔE 16.9Rebecca purple · ΔE 19.3Dark blue · ΔE 19.4Dark slateblue · ΔE 21.7
Nearest named CSS colourMidnight blue (#191970)ΔE 8.48, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#817510
Analogous#105481, #3D1081
Triadic#81101C, #1C8110
Split complementary#813D10, #548110
Tetradic#811054, #817510, #10813D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#707DED
Lighter +30%#4254E8
Lighter +20%#1B30DC
Lighter +10%#1626AE
Darker −10%#0A1254
Darker −20%#050826
Darker −30%#000000
Darker −40%#000000
More saturated +25%#000F91
Less saturated −25%#222A6F

Channel breakdown

R16
G28
B129
Red16 (6.3%)
Green28 (11%)
Blue129 (50.6%)
Hue233.63°
Saturation (HSL)77.93%
Lightness28.43%
Dominant channelBlue
Hex per channelR 10 · G 1C · B 81

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Every value on this page was computed from “101c81” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.